Envelope/mobile/lib/utils/storage/write_file.dart

import 'dart:io';
import 'dart:typed_data';

import 'package:path_provider/path_provider.dart';

Future<String> get _localPath async {
  final directory = await getApplicationDocumentsDirectory();

  return directory.path;
}

Future<File> _localFile(String fileName) async {
  final path = await _localPath;
  return File('$path/$fileName');
}

Future<File> writeImage(String fileName, Uint8List data) async {
  final file = await _localFile(fileName);

  // Write the file
  return file.writeAsBytes(data);
}

String getExtension(String fileName) {
  return  fileName.split('.').last;
}